package pen_exam.yongyou_2020_10_26;

public class Class03_IsThree {
    public boolean isThree (int n) {
        if(n <= 3){
            return false;
        }
        int temp = 1;
        while(temp * temp <= n){
            if(temp* temp == n){
                return true;
            }
            temp++;
        }
        return false;
        // write code here
    }
}
